| Titre : |
Electrochemical behavior of hydrophobic silane–zeolite coatings for corrosion protection of aluminum substrate |
| Type de document : |
texte imprimé |
| Auteurs : |
Luigi Calabrese, Auteur ; Lucio Bonaccorsi, Auteur ; Angela Caprì, Auteur ; Edoardo Proverbio, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 883-898 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Anticorrosion
Caractérisation
Electrochimie
Hydrophobie
Revêtements:Peinture
Silanes
Zéolites
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The anticorrosive properties of a silane–zeolite composite coating applied on a 6061 aluminum substrate was investigated. The composite film, deposited by dip-coating technique, was prepared with different contents of SAPO34 powder (60–90 wt%) with the purpose of evaluating the protective action offered by the zeolite-filled silane matrix. Corrosion protection performance, during immersion in 3.5% NaCl solution, was evaluated by means of a potentio-dynamic polarization test and electrochemical impedance spectroscopy (EIS). The coating evidenced good barrier properties and high hydrophobicity. The addition of zeolite in the silane matrix induced, as expected, a reduction of cathodic and anodic current. The zeolite improved the barrier properties of the hybrid sol–gel films, enhancing the resistance to localized corrosion attacks. Better results were observed for the sample with 80 wt% of zeolite filler that evidenced still acceptable protective action after 3 days of immersion in the sodium chloride solution. |
| Note de contenu : |
- EXPERIMENTAL METHODS AND MATERIALS : Sample preparation - Contact angle measurement - Electrochemical test
- RESULTS AND DISCUSSION : Morphology of silane-zeolite composite coating - Wettability - Potentiodynamic test - Electrochemical impedance spectroscopy test - Models of degradation mechanisms of composite coating at long immersion time |
| DOI : |
10.1007/s11998-014-9597-4 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-014-9597-4.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22312 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 11, N° 6 (11/2014) . - p. 883-898
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Electrochemical behavior of hydrophobic silane–zeolite coatings for corrosion protection of aluminum substrate in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 11, N° 6 (11/2014)
